Furnace for burning factory refuse



A. MARGO.

FURNACE FOR BURNING FACTORY REFUSE.

APPLlCATION FILED MAR. 3|, 1919.

Patented Sept. 13, 1921..

2 SHEETSSHEET I.

A. MARGO.

FURNACE FOR BURNING FACTORY REFUSE.

APPLICATION FILED MAR. 31,1919.

PatentedSept. 13, 1921.

2 SHEETS-SHEET 2- anrnun MARGO, or nan'rns, rnancn.

I FURNACE FOR BURNING FACTORY REFUSE.

. .llpplication filed reach 31, 1919. Serial No. 286,612.

(GRANTED UNDER T E rnovisrons or'rnn Acror MARCH 3, 1921, 41 strain. n, 1313.)

To all whom it may concern: I

Be it known that 1, ARTHUR Marco, a citizen of the Republic of 1* rance, residing in Nantes, Loire-Inferieure, France, have invented certain "new and useful Improvements in Furnaces for Burning Factory Refuse, for which 1 have filed'an application in France, November 80, 1916, Patent N 0. 486,564, and of which the following is a specification.

This invention relates to a combined furnace which is particularly adapted for burning waste or refuse of various kinds, such as shavings, sawdust, bagasse, waste of spinning mills and sawmills, turf, and other kinds of refuse.

The improved furnace may be used with advantage for heating steam boilers of practically any kind, for instance elephant boilers, semi-tubular, multi-tubular and other boilers, and may be arranged either underground, or as an internal furnace (being in the latter case mounted upon a suitable carriage). The improved furnace comprises a feeding chute or hopper which is separated from the furnace by a movable shutter or feed regulator the opening of which may be adjusted by means of a counter-weighted lever adapted to move upon a graduated scale. The waste or refuse forming the fuel descends from the hopper or chute and burns upon a stepped grate at the bottom of which is disposed a tilting clinker grate.

At the lower portion of the front plate of the furnace are arranged pivoted regulating shutters for controlling the admission of air. These shutters or regulators are operated by means of a counter-weighted lever adapted to be fixed in any desired position upon a graduated scale.

A steam boiler furnace constructed according to the invention is shown byway of example in the accompanying drawlngs, in which Figure 1 is a front View, and 1* ig. 2 a longitudinal section.

For the purpose of building in the improved furnace, the lower portion of the front metal frame of the boiler may be substituted by a special front plate 1, the latter being secured to an upper plate 2 of usual construction. The plate 1 is provided with an upper opening 3 for the supply of the fuel and one or two lower openings 4 for thedevice for regulating the admission of air to the grate. Y In front of the opening 3 there is arranged a feeding chute or hopper 5 in which areplaced by means of a shovel or otherwise the waste products to be burned, which when the movable shutter 7 is opened slide down upon the. stepped grate 6. The shutter or regulator 7 is provided with a shield 8 protecting it against the back flame, and is fast upon a shaft 9 mounted in bearing 10 and adapted to be operated by a counter-weighted lever 11 which if continuous feeding is adopted may be fixed in any desired position upon the graduated sector 12. The stepped grate 6 consists of flat bars as shown in the drawings so as to prevent effectively the fuel from dropping through into the ashpit, and is prolonged at the lower end by a tilting clinker grate 13. In order to prevent the back flame from passing outside atthe upper end of the regulator 7, the shaft 9 is covered in front by a metallic shield 14 (see Fig. 2). Underneath the feeding chute or hopper 5 are arranged within openings 4, regulating shutters 15 which are mounted upon the shaft 16 and serve to control the admission of the air necessary for the combustion. These shutters 15 may be operated by means of a counterweighted lever 17 which may be fixed in any desired position upon a graduated sector 18.

If the fuel is fed into the chute or hopper 5 intermittently, by means of a shovel or otherwise, the attendant after filling the chute, operates the lever 11 so as to completely open the shutter 7 whereupon the full charge instantly leaves the hopper and descends upon the stepped grate 6. Upon the lever 11 being then released, the opening 3 is automatically closed by the shutter 7 If on the other hand the furnace is to be worked in such a manner that the grate is to be charged continuously from the chute, an elevator, for instance a bucket elevator, or any: other suitable device may be used for feeding the fuel into the hopper 5. In this case the opening of the shutter 7 is adjusted by means of the lever 11 and the graduated sector 12 in such a manner as to allow only the required quantity of fuel to pass continuously into thegrate.

The clinker grate 18 may be manipulated I so as to give any desired opening, a shield for preventing the flames of the furnace from entering the feed chute, and two lower pivoted shutters to regulate the entrance of air under the furnace.

2. A furnace for burning waste products comprising in combination a stepped grate having flat bars, a feeding chute arranged outside the furnace, a pivoted vertically movable shutter separating the feeding chute from the furnace; a counterweighted lever to operate the movable shutter, a graduated sector enabling the shutter to be maintained so as to give any desired opening, a protecting shield placed above the pivot of the vertical shutter, two pivoted lower shutters to regulate the entrance of air under the grate, and a graduated sector to hold said lower shutters in any desired position.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

ARTHUR MARGO. Witnesses: w l

' Armin Econnrmnn,

G. HIPPOLYTE. 

